<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="图片" prop="bannerimg">
        <el-input
          v-model="queryParams.bannerimg"
          placeholder="请输入图片"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="描述" prop="description">
        <el-input
          v-model="queryParams.description"
          placeholder="请输入描述"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="跳转路径" prop="topath">
        <el-input
          v-model="queryParams.topath"
          placeholder="请输入跳转路径"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="是否显示" prop="isshow">
        <el-input
          v-model="queryParams.isshow"
          placeholder="请输入是否显示"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="创建时间" prop="createTime">
        <el-date-picker clearable
          v-model="queryParams.createTime"
          type="date"
          value-format="yyyy-MM-dd"
          placeholder="请选择创建时间">
        </el-date-picker>
      </el-form-item>
      <el-form-item label="更新时间" prop="updateTime">
        <el-date-picker clearable
          v-model="queryParams.updateTime"
          type="date"
          value-format="yyyy-MM-dd"
          placeholder="请选择更新时间">
        </el-date-picker>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:banners:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:banners:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:banners:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:banners:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="bannersList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="编号" align="center" prop="id" />
      <el-table-column label="图片" align="center" prop="bannerimg" >
        <template slot-scope="scope">
          <img :src="$picbaserurl + scope.row.bannerimg" :width="50" :height="50">
        </template>
        </el-table-column>
      <el-table-column label="描述" align="center" prop="description" />
      <el-table-column label="跳转路径" align="center" prop="topath" />
      <el-table-column label="是否显示" align="center" prop="isshow" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:banners:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:banners:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <el-pagination
        small
        v-show ="total>0"
        :total = "total"
        :current-page.sync="queryParams.pageNum"
        :page-size.sync="queryParams.pageSize"
        background
        layout="prev, pager, next"
        @current-change = "getList" />

    <!-- 添加或修改banners对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="图片" prop="bannerimg">
          <el-upload
        class="avatar-uploader"
        :action="$picbaserurl + '/upload'"
        :show-file-list="false"
        :on-success="handleAvatarSuccess"
       :before-upload="beforeAvatarUpload">
       <img v-if="form.bannerimg"
            :src="$picbaserurl + form.bannerimg"
           class="avatar"
              />
              <i v-else class="el-icon-plus avatar-uploader-icon"></i>
    </el-upload>
        </el-form-item>
        <el-form-item label="描述" prop="description">
          <el-input v-model="form.description" placeholder="请输入描述" />
        </el-form-item>
        <el-form-item label="跳转路径" prop="topath">
          <el-input v-model="form.topath" placeholder="请输入跳转路径" />
        </el-form-item>
        <el-form-item label="是否显示" prop="isshow">
          <el-input v-model="form.isshow" placeholder="请输入是否显示" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listBanners, getBanners, delBanners, addBanners, updateBanners } from "@/api/banners";

export default {
  name: "Banners",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // banners表格数据
      bannersList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        bannerimg: null,
        description: null,
        topath: null,
        isshow: null,
        createTime: null,
        updateTime: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {
    this.getList();
  },
  methods: {
    /** 查询banners列表 */
    getList() {
      this.loading = true;
      listBanners(this.queryParams).then(response => {
        this.bannersList = response.data.rows;
        this.total = response.data.totalsize;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        bannerimg: null,
        description: null,
        topath: null,
        isshow: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null
      };
      this.$nextTick(() =>{
          this.resetForm("form");
      })
       
      
     
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      // this.resetForm("queryForm");
      this.$nextTick(() =>{
        this.resetForm("queryForm").resetFields();
      })
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加banners";
 
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids
      getBanners(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改banners";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != null) {
            updateBanners(this.form).then(response => {
              this.$message({type:'success',message:'修改成功'})
              this.open = false;
              this.getList();
            });
          } else {
            addBanners(this.form).then(response => {
              this.$message({type:'success',message:'新增成功'})
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$confirm('是否确认删除banners编号为"' + ids + '"的数据项？','提示',{confirmButtonText:'确定',cancelButtonText:'取消',type:'warning'}).then(function(){
        return delBanners(ids);

      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/banners/export', {
        ...this.queryParams
      }, `banners_${new Date().getTime()}.xlsx`)
    },
    handleAvatarSuccess(res, file) {
      this.form.bannerimg = res.data;
      console.log(this.form.bannerimg);
    },
    beforeAvatarUpload(file) {
    
   
  }, 
}
};
</script>


<style scoped>
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
  border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>
